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FruitGames537's questions

Martin Hope
FruitGames537
Asked: 2024-08-19 08:32:20 +0000 UTC
  • 5

我有一个类Container<TKey, TValue>，它是一个带有键TKey和值的对象，可以是TValue相同容器的列表：

using System.Collections.Generic;
using System;
using UnityEngine;

namespace Adapter.Containers
{
    [Serializable]
    public class Container<TKey, TValue>
    {
        public Container() : this(default) { }
        public Container(TKey key) : this(key, default) { }
        public Container(TKey key, TValue value)
        {
            m_Key = key;
            m_Value = value;
        }



        [SerializeField] private TKey m_Key;
        [SerializeField] private object m_Value;

        public object this[TKey name]
        {
            get
            {
                if (GetContainer(name) is Container<TKey, TValue> container)
                    return container;
                else if (GetStore(name) is TValue elementary)
                    return elementary;
                throw new ArgumentException("Cannot get value because store unknown type");
            }
            set
            {
                if (value is Container<TKey, TValue> container)
                    SetContainer(name, container);
                else if (value is TValue elementary)
                    SetStore(name, elementary);
                throw new ArgumentException("Cannot set value because this type not support");
            }
        }

        public TKey name { get => m_Key; set => m_Key = value; }

        public List<Container<TKey, TValue>> container
        {
            get
            {
                if (m_Value is List<Container<TKey, TValue>>)
                    return m_Value as List<Container<TKey, TValue>>;
                return null;
            }
            set
            {
                if (value is not null)
                    m_Value = value;
                throw new ArgumentException("Cannot set not container value by container property");
            }
        }
        public TValue store
        {
            get
            {
                if (m_Value is TValue)
                    return (TValue)m_Value;
                return default;
            }
            set
            {
                if (value is not null)
                    m_Value = value;
                throw new ArgumentException("Cannot set unacceptable type value by store property");
            }
        }

        public ContainerType type => m_Value is List<Container<TKey, TValue>> ? ContainerType.Container : m_Value is TValue ? ContainerType.Store : ContainerType.Unknown;



        public Container<TKey, TValue> GetContainer(TKey name) => container[container.FindIndex(item => item.name.Equals(name))]; // Получение по индексу просто для эстетичности
        public void SetContainer(TKey name, Container<TKey, TValue> value) => container[container.FindIndex(item => item.name.Equals(name))] = value;

        public TValue GetStore(TKey name) => container.Find(item => item.name.Equals(name)).store;
        public void SetStore(TKey name, TValue value) => container.Find(item => item.name.Equals(name)).store = value;
    }
}

我还有一个ContainerPropertyDrawer用于渲染此类的类：

using UnityEditor;
using UnityEngine;

namespace Adapter.Containers.Editor
{
    [CustomPropertyDrawer(typeof(Container<,>))]
    public class ContainerPropertyDrawer : PropertyDrawer
    {
        private ContainerType m_ContainerType = ContainerType.Unknown;

        public ContainerType containerType { get => m_ContainerType; set => m_ContainerType = value; }



        public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
        {
            SerializedProperty keyProperty = property.FindPropertyRelative("m_Key");
            SerializedProperty valueProperty = property.FindPropertyRelative("m_Value");

            EditorGUI.LabelField(position, label);
            EditorGUILayout.PropertyField(keyProperty);
            m_ContainerType = (ContainerType)EditorGUILayout.EnumPopup(m_ContainerType);
            if (m_ContainerType != ContainerType.Unknown)
                if (m_ContainerType == ContainerType.Container)
                    EditorGUILayout.PropertyField(valueProperty, true);
                else
                    EditorGUILayout.ObjectField(valueProperty.objectReferenceValue, typeof(object), true);
        }
    }
}

我遇到的问题是，首先，它会更改同一列表中的所有元素（不是特别重要），其次，不会为我显示值字段（当我尝试绘制该字段时m_ContainerType会出现错误，据我所知，unity 不想正常接收具有或不具有类型的字段？）SerializedProperty is nullm_Valueobject

c#